972758132

Committed 18 Aug 2023 09:24PM UTC coverage: 79.725% (+0.1%) from 79.613%

Build # 972758132

Build Type

Pull #901

gitlab-ci

Committed by

merlin-northern

Commit Message

test: mocks and units

Ticket: MEN-6623
Signed-off-by: Peter Grzybowski <peter@northern.tech>

Pull Request Pull Request #901: feat: save and get the update types

Run Details

85 of 93 new or added lines in 5 files covered. (91.4%)

384 existing lines in 3 files now uncovered.

7821 of 9810 relevant lines covered (79.72%)

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77.14

/app/app.go

// Copyright 2023 Northern.tech AS
//
//        Licensed under the Apache License, Version 2.0 (the "License");
//        you may not use this file except in compliance with the License.
//        You may obtain a copy of the License at
//
//            http://www.apache.org/licenses/LICENSE-2.0
//
//        Unless required by applicable law or agreed to in writing, software
//        distributed under the License is distributed on an "AS IS" BASIS,
//        WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//        See the License for the specific language governing permissions and
//        limitations under the License.

package app

import (
        "bytes"
        "context"
        "encoding/json"
        "io"
        "path"
        "reflect"
        "strings"
        "time"

        "github.com/google/uuid"
        "github.com/pkg/errors"

        "github.com/mendersoftware/go-lib-micro/identity"
        "github.com/mendersoftware/go-lib-micro/log"
        "github.com/mendersoftware/mender-artifact/areader"
        "github.com/mendersoftware/mender-artifact/artifact"
        "github.com/mendersoftware/mender-artifact/awriter"
        "github.com/mendersoftware/mender-artifact/handlers"

        "github.com/mendersoftware/deployments/client/inventory"
        "github.com/mendersoftware/deployments/client/reporting"
        "github.com/mendersoftware/deployments/client/workflows"
        "github.com/mendersoftware/deployments/model"
        "github.com/mendersoftware/deployments/storage"
        "github.com/mendersoftware/deployments/store"
        "github.com/mendersoftware/deployments/store/mongo"
        "github.com/mendersoftware/deployments/utils"
)

const (
        ArtifactContentType              = "application/vnd.mender-artifact"
        ArtifactConfigureProvides        = "data-partition.mender-configure.version"
        ArtifactConfigureProvidesCleared = "data-partition.mender-configure.*"

        DefaultUpdateDownloadLinkExpire  = 24 * time.Hour
        DefaultImageGenerationLinkExpire = 7 * 24 * time.Hour
        PerPageInventoryDevices          = 512
        InventoryGroupScope              = "system"
        InventoryIdentityScope           = "identity"
        InventoryGroupAttributeName      = "group"
        InventoryStatusAttributeName     = "status"
        InventoryStatusAccepted          = "accepted"

        fileSuffixTmp = ".tmp"

        inprogressIdleTime = time.Hour
)

var (
        ArtifactConfigureType = "mender-configure"
)

// Errors expected from App interface
var (
        // images
        ErrImageMetaNotFound                = errors.New("Image metadata is not found")
        ErrModelMultipartUploadMsgMalformed = errors.New("Multipart upload message malformed")
        ErrModelMissingInputMetadata        = errors.New("Missing input metadata")
        ErrModelMissingInputArtifact        = errors.New("Missing input artifact")
        ErrModelInvalidMetadata             = errors.New("Metadata invalid")
        ErrModelArtifactNotUnique           = errors.New("Artifact not unique")
        ErrModelImageInActiveDeployment     = errors.New(
                "Image is used in active deployment and cannot be removed",
        )
        ErrModelImageUsedInAnyDeployment = errors.New("Image has already been used in deployment")
        ErrModelParsingArtifactFailed    = errors.New("Cannot parse artifact file")
        ErrUploadNotFound                = errors.New("artifact object not found")
        ErrEmptyArtifact                 = errors.New("artifact cannot be nil")

        ErrMsgArtifactConflict = "An artifact with the same name has conflicting dependencies"

        // deployments
        ErrModelMissingInput       = errors.New("Missing input deployment data")
        ErrModelInvalidDeviceID    = errors.New("Invalid device ID")
        ErrModelDeploymentNotFound = errors.New("Deployment not found")
        ErrModelInternal           = errors.New("Internal error")
        ErrStorageInvalidLog       = errors.New("Invalid deployment log")
        ErrStorageNotFound         = errors.New("Not found")
        ErrDeploymentAborted       = errors.New("Deployment aborted")
        ErrDeviceDecommissioned    = errors.New("Device decommissioned")
        ErrNoArtifact              = errors.New("No artifact for the deployment")
        ErrNoDevices               = errors.New("No devices for the deployment")
        ErrDuplicateDeployment     = errors.New("Deployment with given ID already exists")
        ErrInvalidDeploymentID     = errors.New("Deployment ID must be a valid UUID")
        ErrConflictingRequestData  = errors.New("Device provided conflicting request data")
)

//deployments

//go:generate ../utils/mockgen.sh
type App interface {
        HealthCheck(ctx context.Context) error
        // limits
        GetLimit(ctx context.Context, name string) (*model.Limit, error)
        ProvisionTenant(ctx context.Context, tenant_id string) error

        // Storage Settings
        GetStorageSettings(ctx context.Context) (*model.StorageSettings, error)
        SetStorageSettings(ctx context.Context, storageSettings *model.StorageSettings) error

        // images
        ListImages(
                ctx context.Context,
                filters *model.ReleaseOrImageFilter,
        ) ([]*model.Image, int, error)
        DownloadLink(ctx context.Context, imageID string,
                expire time.Duration) (*model.Link, error)
        UploadLink(
                ctx context.Context,
                expire time.Duration,
                skipVerify bool,
        ) (*model.UploadLink, error)
        CompleteUpload(ctx context.Context, intentID string, skipVerify bool) error
        GetImage(ctx context.Context, id string) (*model.Image, error)
        DeleteImage(ctx context.Context, imageID string) error
        CreateImage(ctx context.Context,
                multipartUploadMsg *model.MultipartUploadMsg) (string, error)
        GenerateImage(ctx context.Context,
                multipartUploadMsg *model.MultipartGenerateImageMsg) (string, error)
        GenerateConfigurationImage(
                ctx context.Context,
                deviceType string,
                deploymentID string,
        ) (io.Reader, error)
        EditImage(ctx context.Context, id string,
                constructorData *model.ImageMeta) (bool, error)

        // deployments
        CreateDeployment(ctx context.Context,
                constructor *model.DeploymentConstructor) (string, error)
        GetDeployment(ctx context.Context, deploymentID string) (*model.Deployment, error)
        IsDeploymentFinished(ctx context.Context, deploymentID string) (bool, error)
        AbortDeployment(ctx context.Context, deploymentID string) error
        GetDeploymentStats(ctx context.Context, deploymentID string) (model.Stats, error)
        GetDeploymentsStats(ctx context.Context,
                deploymentIDs ...string) ([]*model.DeploymentStats, error)
        GetDeploymentForDeviceWithCurrent(ctx context.Context, deviceID string,
                request *model.DeploymentNextRequest) (*model.DeploymentInstructions, error)
        HasDeploymentForDevice(ctx context.Context, deploymentID string,
                deviceID string) (bool, error)
        UpdateDeviceDeploymentStatus(ctx context.Context, deploymentID string,
                deviceID string, state model.DeviceDeploymentState) error
        GetDeviceStatusesForDeployment(ctx context.Context,
                deploymentID string) ([]model.DeviceDeployment, error)
        GetDevicesListForDeployment(ctx context.Context,
                query store.ListQuery) ([]model.DeviceDeployment, int, error)
        GetDeviceDeploymentListForDevice(ctx context.Context,
                query store.ListQueryDeviceDeployments) ([]model.DeviceDeploymentListItem, int, error)
        LookupDeployment(ctx context.Context,
                query model.Query) ([]*model.Deployment, int64, error)
        SaveDeviceDeploymentLog(ctx context.Context, deviceID string,
                deploymentID string, logs []model.LogMessage) error
        GetDeviceDeploymentLog(ctx context.Context,
                deviceID, deploymentID string) (*model.DeploymentLog, error)
        AbortDeviceDeployments(ctx context.Context, deviceID string) error
        DeleteDeviceDeploymentsHistory(ctx context.Context, deviceId string) error
        DecommissionDevice(ctx context.Context, deviceID string) error
        CreateDeviceConfigurationDeployment(
                ctx context.Context, constructor *model.ConfigurationDeploymentConstructor,
                deviceID, deploymentID string) (string, error)
        UpdateDeploymentsWithArtifactName(
                ctx context.Context,
                artifactName string,
        ) error
        GetDeviceDeploymentLastStatus(
                ctx context.Context,
                devicesIds []string,
        ) (
                model.DeviceDeploymentLastStatuses,
                error,
        )

        // releases
        ReplaceReleaseTags(ctx context.Context, releaseName string, tags model.Tags) error
        UpdateRelease(ctx context.Context, releaseName string, release model.ReleasePatch) error
        ListReleaseTags(ctx context.Context) (model.Tags, error)
        GetReleasesUpdateTypes(ctx context.Context) ([]string, error)
}

type Deployments struct {
        db              store.DataStore
        objectStorage   storage.ObjectStorage
        workflowsClient workflows.Client
        inventoryClient inventory.Client
        reportingClient reporting.Client
}

// Compile-time check
var _ App = &Deployments{}

func NewDeployments(
        storage store.DataStore,
        objectStorage storage.ObjectStorage,
) *Deployments {
        return &Deployments{
                db:              storage,
                objectStorage:   objectStorage,
                workflowsClient: workflows.NewClient(),
                inventoryClient: inventory.NewClient(),
        }
}

func (d *Deployments) SetWorkflowsClient(workflowsClient workflows.Client) {
        d.workflowsClient = workflowsClient
}

func (d *Deployments) SetInventoryClient(inventoryClient inventory.Client) {
        d.inventoryClient = inventoryClient
}

func (d *Deployments) HealthCheck(ctx context.Context) error {
        err := d.db.Ping(ctx)
        if err != nil {
                return errors.Wrap(err, "error reaching MongoDB")
        }
        err = d.objectStorage.HealthCheck(ctx)
        if err != nil {
                return errors.Wrap(
                        err,
                        "error reaching artifact storage service",
                )
        }

        err = d.workflowsClient.CheckHealth(ctx)
        if err != nil {
                return errors.Wrap(err, "Workflows service unhealthy")
        }

        err = d.inventoryClient.CheckHealth(ctx)
        if err != nil {
                return errors.Wrap(err, "Inventory service unhealthy")
        }

        if d.reportingClient != nil {
                err = d.reportingClient.CheckHealth(ctx)
                if err != nil {
                        return errors.Wrap(err, "Reporting service unhealthy")
                }
        }
        return nil
}

func (d *Deployments) contextWithStorageSettings(
        ctx context.Context,
) (context.Context, error) {
        var err error
        settings, ok := storage.SettingsFromContext(ctx)
        if !ok {
                settings, err = d.db.GetStorageSettings(ctx)
        }
        if err != nil {
                return nil, err
        } else if settings != nil {
                err = settings.Validate()
                if err != nil {
                        return nil, err
                }
        }
        return storage.SettingsWithContext(ctx, settings), nil
}

func (d *Deployments) GetLimit(ctx context.Context, name string) (*model.Limit, error) {
        limit, err := d.db.GetLimit(ctx, name)
        if err == mongo.ErrLimitNotFound {
                return &model.Limit{
                        Name:  name,
                        Value: 0,
                }, nil

        } else if err != nil {
                return nil, errors.Wrap(err, "failed to obtain limit from storage")
        }
        return limit, nil
}

func (d *Deployments) ProvisionTenant(ctx context.Context, tenant_id string) error {
        if err := d.db.ProvisionTenant(ctx, tenant_id); err != nil {
                return errors.Wrap(err, "failed to provision tenant")
        }

        return nil
}

// CreateImage parses artifact and uploads artifact file to the file storage - in parallel,
// and creates image structure in the system.
// Returns image ID and nil on success.
func (d *Deployments) CreateImage(ctx context.Context,
        multipartUploadMsg *model.MultipartUploadMsg) (string, error) {
        return d.handleArtifact(ctx, multipartUploadMsg, false)
}

// handleArtifact parses artifact and uploads artifact file to the file storage - in parallel,
// and creates image structure in the system.
// Returns image ID, artifact file ID and nil on success.
func (d *Deployments) handleArtifact(ctx context.Context,
        multipartUploadMsg *model.MultipartUploadMsg,
        skipVerify bool,
) (string, error) {

        l := log.FromContext(ctx)
        ctx, err := d.contextWithStorageSettings(ctx)
        if err != nil {
                return "", err
        }

        // create pipe
        pR, pW := io.Pipe()

        artifactReader := utils.CountReads(multipartUploadMsg.ArtifactReader)

        tee := io.TeeReader(artifactReader, pW)

        uid, err := uuid.Parse(multipartUploadMsg.ArtifactID)
        if err != nil {
                uid, _ = uuid.NewRandom()
        }
        artifactID := uid.String()

        ch := make(chan error)
        // create goroutine for artifact upload
        //
        // reading from the pipe (which is done in UploadArtifact method) is a blocking operation
        // and cannot be done in the same goroutine as writing to the pipe
        //
        // uploading and parsing artifact in the same process will cause in a deadlock!
        //nolint:errcheck
        go func() (err error) {
                defer func() { ch <- err }()
                if skipVerify {
                        err = nil
                        io.Copy(io.Discard, pR)
                        return nil
                }
                err = d.objectStorage.PutObject(
                        ctx, model.ImagePathFromContext(ctx, artifactID), pR,
                )
                if err != nil {
                        pR.CloseWithError(err)
                }
                return err
        }()

        // parse artifact
        // artifact library reads all the data from the given reader
        metaArtifactConstructor, err := getMetaFromArchive(&tee, skipVerify)
        if err != nil {
                _ = pW.CloseWithError(err)
                <-ch
                return artifactID, errors.Wrap(ErrModelParsingArtifactFailed, err.Error())
        }
        // validate artifact metadata
        if err = metaArtifactConstructor.Validate(); err != nil {
                return artifactID, ErrModelInvalidMetadata
        }

        if !skipVerify {
                // read the rest of the data,
                // just in case the artifact library did not read all the data from the reader
                _, err = io.Copy(io.Discard, tee)
                if err != nil {
                        // CloseWithError will cause the reading end to abort upload.
                        _ = pW.CloseWithError(err)
                        <-ch
                        return artifactID, err
                }
        }

        // close the pipe
        pW.Close()

        // collect output from the goroutine
        if uploadResponseErr := <-ch; uploadResponseErr != nil {
                return artifactID, uploadResponseErr
        }

        image := model.NewImage(
                artifactID,
                multipartUploadMsg.MetaConstructor,
                metaArtifactConstructor,
                artifactReader.Count(),
        )

        // here
        // image.ArtifactMeta.Updates[0].TypeInfo
        // save image structure in the system
        if err = d.db.InsertImage(ctx, image); err != nil {
                // Try to remove the storage from s3.
                if errDelete := d.objectStorage.DeleteObject(
                        ctx, model.ImagePathFromContext(ctx, artifactID),
                ); errDelete != nil {
                        l.Errorf(
                                "failed to clean up artifact storage after failure: %s",
                                errDelete,
                        )
                }
                if idxErr, ok := err.(*model.ConflictError); ok {
                        return artifactID, idxErr
                }
                return artifactID, errors.Wrap(err, "Fail to store the metadata")
        }
        i := 0
        var updateTypes []string
        if image.ArtifactMeta != nil {
                updateTypes = make([]string, len(image.ArtifactMeta.Updates))
                for _, t := range image.ArtifactMeta.Updates {
                        if t.TypeInfo.Type == nil {
                                continue
                        }
                        updateTypes[i] = *t.TypeInfo.Type
                        i++
                }
        }
        if i > 0 {
                err = d.db.SaveUpdateTypes(ctx, updateTypes[:i])
                if err != nil {
                        l.Errorf(
                                "error while saving the update types for the artifact: %s",
                                err.Error(),
                        )
                }
        }
        // update release
        if err := d.updateRelease(ctx, image, nil); err != nil {
                return "", err
        }

        if err := d.UpdateDeploymentsWithArtifactName(ctx, metaArtifactConstructor.Name); err != nil {
                return "", errors.Wrap(err, "fail to update deployments")
        }

        return artifactID, nil
}

// GenerateImage parses raw data and uploads it to the file storage - in parallel,
// creates image structure in the system, and starts the workflow to generate the
// artifact from them.
// Returns image ID and nil on success.
func (d *Deployments) GenerateImage(ctx context.Context,
        multipartGenerateImageMsg *model.MultipartGenerateImageMsg) (string, error) {

        if multipartGenerateImageMsg == nil {
                return "", ErrModelMultipartUploadMsgMalformed
        }

        imgPath, err := d.handleRawFile(ctx, multipartGenerateImageMsg)
        if err != nil {
                return "", err
        }
        if id := identity.FromContext(ctx); id != nil && len(id.Tenant) > 0 {
                multipartGenerateImageMsg.TenantID = id.Tenant
        }
        err = d.workflowsClient.StartGenerateArtifact(ctx, multipartGenerateImageMsg)
        if err != nil {
                if cleanupErr := d.objectStorage.DeleteObject(ctx, imgPath); cleanupErr != nil {
                        return "", errors.Wrap(err, cleanupErr.Error())
                }
                return "", err
        }

        return multipartGenerateImageMsg.ArtifactID, err
}

func (d *Deployments) GenerateConfigurationImage(
        ctx context.Context,
        deviceType string,
        deploymentID string,
) (io.Reader, error) {
        var buf bytes.Buffer
        dpl, err := d.db.FindDeploymentByID(ctx, deploymentID)
        if err != nil {
                return nil, err
        } else if dpl == nil {
                return nil, ErrModelDeploymentNotFound
        }
        var metaData map[string]interface{}
        err = json.Unmarshal(dpl.Configuration, &metaData)
        if err != nil {
                return nil, errors.Wrapf(err, "malformed configuration in deployment")
        }

        artieWriter := awriter.NewWriter(&buf, artifact.NewCompressorNone())
        module := handlers.NewModuleImage(ArtifactConfigureType)
        err = artieWriter.WriteArtifact(&awriter.WriteArtifactArgs{
                Format:  "mender",
                Version: 3,
                Devices: []string{deviceType},
                Name:    dpl.ArtifactName,
                Updates: &awriter.Updates{Updates: []handlers.Composer{module}},
                Depends: &artifact.ArtifactDepends{
                        CompatibleDevices: []string{deviceType},
                },
                Provides: &artifact.ArtifactProvides{
                        ArtifactName: dpl.ArtifactName,
                },
                MetaData: metaData,
                TypeInfoV3: &artifact.TypeInfoV3{
                        Type: &ArtifactConfigureType,
                        ArtifactProvides: artifact.TypeInfoProvides{
                                ArtifactConfigureProvides: dpl.ArtifactName,
                        },
                        ArtifactDepends:        artifact.TypeInfoDepends{},
                        ClearsArtifactProvides: []string{ArtifactConfigureProvidesCleared},
                },
        })

        return &buf, err
}

// handleRawFile parses raw data, uploads it to the file storage,
// and starts the workflow to generate the artifact.
// Returns the object path to the file and nil on success.
func (d *Deployments) handleRawFile(ctx context.Context,
        multipartMsg *model.MultipartGenerateImageMsg) (filePath string, err error) {
        l := log.FromContext(ctx)
        uid, _ := uuid.NewRandom()
        artifactID := uid.String()
        multipartMsg.ArtifactID = artifactID
        filePath = model.ImagePathFromContext(ctx, artifactID+fileSuffixTmp)

        // check if artifact is unique
        // artifact is considered to be unique if there is no artifact with the same name
        // and supporting the same platform in the system
        isArtifactUnique, err := d.db.IsArtifactUnique(ctx,
                multipartMsg.Name,
                multipartMsg.DeviceTypesCompatible,
        )
        if err != nil {
                return "", errors.Wrap(err, "Fail to check if artifact is unique")
        }
        if !isArtifactUnique {
                return "", ErrModelArtifactNotUnique
        }

        ctx, err = d.contextWithStorageSettings(ctx)
        if err != nil {
                return "", err
        }
        err = d.objectStorage.PutObject(
                ctx, filePath, multipartMsg.FileReader,
        )
        if err != nil {
                return "", err
        }
        defer func() {
                if err != nil {
                        e := d.objectStorage.DeleteObject(ctx, filePath)
                        if e != nil {
                                l.Errorf("error cleaning up raw file '%s' from objectstorage: %s",
                                        filePath, e)
                        }
                }
        }()

        link, err := d.objectStorage.GetRequest(
                ctx,
                filePath,
                path.Base(filePath),
                DefaultImageGenerationLinkExpire,
        )
        if err != nil {
                return "", err
        }
        multipartMsg.GetArtifactURI = link.Uri

        link, err = d.objectStorage.DeleteRequest(ctx, filePath, DefaultImageGenerationLinkExpire)
        if err != nil {
                return "", err
        }
        multipartMsg.DeleteArtifactURI = link.Uri

        return artifactID, nil
}

// GetImage allows to fetch image object with specified id
// Nil if not found
func (d *Deployments) GetImage(ctx context.Context, id string) (*model.Image, error) {

        image, err := d.db.FindImageByID(ctx, id)
        if err != nil {
                return nil, errors.Wrap(err, "Searching for image with specified ID")
        }

        if image == nil {
                return nil, nil
        }

        return image, nil
}

// DeleteImage removes metadata and image file
// Noop for not existing images
// Allowed to remove image only if image is not scheduled or in progress for an updates - then image
// file is needed
// In case of already finished updates only image file is not needed, metadata is attached directly
// to device deployment therefore we still have some information about image that have been used
// (but not the file)
func (d *Deployments) DeleteImage(ctx context.Context, imageID string) error {
        found, err := d.GetImage(ctx, imageID)

        if err != nil {
                return errors.Wrap(err, "Getting image metadata")
        }

        if found == nil {
                return ErrImageMetaNotFound
        }

        inUse, err := d.ImageUsedInActiveDeployment(ctx, imageID)
        if err != nil {
                return errors.Wrap(err, "Checking if image is used in active deployment")
        }

        // Image is in use, not allowed to delete
        if inUse {
                return ErrModelImageInActiveDeployment
        }

        // Delete image file (call to external service)
        // Noop for not existing file
        ctx, err = d.contextWithStorageSettings(ctx)
        if err != nil {
                return err
        }
        imagePath := model.ImagePathFromContext(ctx, imageID)
        if err := d.objectStorage.DeleteObject(ctx, imagePath); err != nil {
                return errors.Wrap(err, "Deleting image file")
        }

        // Delete metadata
        if err := d.db.DeleteImage(ctx, imageID); err != nil {
                return errors.Wrap(err, "Deleting image metadata")
        }

        // update release
        if err := d.updateRelease(ctx, nil, found); err != nil {
                return err
        }

        return nil
}

// ListImages according to specified filers.
func (d *Deployments) ListImages(
        ctx context.Context,
        filters *model.ReleaseOrImageFilter,
) ([]*model.Image, int, error) {
        imageList, count, err := d.db.ListImages(ctx, filters)
        if err != nil {
                return nil, 0, errors.Wrap(err, "Searching for image metadata")
        }

        if imageList == nil {
                return make([]*model.Image, 0), 0, nil
        }

        return imageList, count, nil
}

// EditObject allows editing only if image have not been used yet in any deployment.
func (d *Deployments) EditImage(ctx context.Context, imageID string,
        constructor *model.ImageMeta) (bool, error) {

        if err := constructor.Validate(); err != nil {
                return false, errors.Wrap(err, "Validating image metadata")
        }

        found, err := d.ImageUsedInDeployment(ctx, imageID)
        if err != nil {
                return false, errors.Wrap(err, "Searching for usage of the image among deployments")
        }

        if found {
                return false, ErrModelImageUsedInAnyDeployment
        }

        foundImage, err := d.db.FindImageByID(ctx, imageID)
        if err != nil {
                return false, errors.Wrap(err, "Searching for image with specified ID")
        }

        if foundImage == nil {
                return false, nil
        }

        foundImage.SetModified(time.Now())
        foundImage.ImageMeta = constructor

        _, err = d.db.Update(ctx, foundImage)
        if err != nil {
                return false, errors.Wrap(err, "Updating image matadata")
        }

        if err := d.updateReleaseEditArtifact(ctx, foundImage); err != nil {
                return false, err
        }

        return true, nil
}

// DownloadLink presigned GET link to download image file.
// Returns error if image have not been uploaded.
func (d *Deployments) DownloadLink(ctx context.Context, imageID string,
        expire time.Duration) (*model.Link, error) {

        image, err := d.GetImage(ctx, imageID)
        if err != nil {
                return nil, errors.Wrap(err, "Searching for image with specified ID")
        }

        if image == nil {
                return nil, nil
        }

        ctx, err = d.contextWithStorageSettings(ctx)
        if err != nil {
                return nil, err
        }
        imagePath := model.ImagePathFromContext(ctx, imageID)
        _, err = d.objectStorage.StatObject(ctx, imagePath)
        if err != nil {
                return nil, errors.Wrap(err, "Searching for image file")
        }

        link, err := d.objectStorage.GetRequest(
                ctx,
                imagePath,
                image.Name+model.ArtifactFileSuffix,
                expire,
        )
        if err != nil {
                return nil, errors.Wrap(err, "Generating download link")
        }

        return link, nil
}

func (d *Deployments) UploadLink(
        ctx context.Context,
        expire time.Duration,
        skipVerify bool,
) (*model.UploadLink, error) {
        ctx, err := d.contextWithStorageSettings(ctx)
        if err != nil {
                return nil, err
        }

        artifactID := uuid.New().String()
        path := model.ImagePathFromContext(ctx, artifactID) + fileSuffixTmp
        if skipVerify {
                path = model.ImagePathFromContext(ctx, artifactID)
        }
        link, err := d.objectStorage.PutRequest(ctx, path, expire)
        if err != nil {
                return nil, errors.WithMessage(err, "app: failed to generate signed URL")
        }
        upLink := &model.UploadLink{
                ArtifactID: artifactID,
                IssuedAt:   time.Now(),
                Link:       *link,
        }
        err = d.db.InsertUploadIntent(ctx, upLink)
        if err != nil {
                return nil, errors.WithMessage(err, "app: error recording the upload intent")
        }

        return upLink, err
}

func (d *Deployments) processUploadedArtifact(
        ctx context.Context,
        artifactID string,
        artifact io.ReadCloser,
        skipVerify bool,
) error {
        linkStatus := model.LinkStatusCompleted

        l := log.FromContext(ctx)
        defer artifact.Close()
        ctx, cancel := context.WithCancel(ctx)
        defer cancel()
        go func() { // Heatbeat routine
                ticker := time.NewTicker(inprogressIdleTime / 2)
                done := ctx.Done()
                defer ticker.Stop()
                for {
                        select {
                        case <-ticker.C:
                                err := d.db.UpdateUploadIntentStatus(
                                        ctx,
                                        artifactID,
                                        model.LinkStatusProcessing,
                                        model.LinkStatusProcessing,
                                )
                                if err != nil {
                                        l.Errorf("failed to update upload link timestamp: %s", err)
                                        cancel()
                                        return
                                }
                        case <-done:
                                return
                        }
                }
        }()
        _, err := d.handleArtifact(ctx, &model.MultipartUploadMsg{
                ArtifactID:     artifactID,
                ArtifactReader: artifact,
        },
                skipVerify,
        )
        if err != nil {
                l.Warnf("failed to process artifact %s: %s", artifactID, err)
                linkStatus = model.LinkStatusAborted
        }
        errDB := d.db.UpdateUploadIntentStatus(
                ctx, artifactID,
                model.LinkStatusProcessing, linkStatus,
        )
        if errDB != nil {
                l.Warnf("failed to update upload link status: %s", errDB)
        }
        return err
}

func (d *Deployments) CompleteUpload(
        ctx context.Context,
        intentID string,
        skipVerify bool,
) error {
        l := log.FromContext(ctx)
        idty := identity.FromContext(ctx)
        ctx, err := d.contextWithStorageSettings(ctx)
        if err != nil {
                return err
        }
        // Create an async context that doesn't cancel when server connection
        // closes.
        ctxAsync := context.Background()
        ctxAsync = log.WithContext(ctxAsync, l)
        ctxAsync = identity.WithContext(ctxAsync, idty)

        settings, _ := storage.SettingsFromContext(ctx)
        ctxAsync = storage.SettingsWithContext(ctxAsync, settings)
        var artifactReader io.ReadCloser
        if skipVerify {
                artifactReader, err = d.objectStorage.GetObject(
                        ctxAsync,
                        model.ImagePathFromContext(ctx, intentID),
                )
        } else {
                artifactReader, err = d.objectStorage.GetObject(
                        ctxAsync,
                        model.ImagePathFromContext(ctx, intentID)+fileSuffixTmp,
                )
        }
        if err != nil {
                if errors.Is(err, storage.ErrObjectNotFound) {
                        return ErrUploadNotFound
                }
                return err
        }

        err = d.db.UpdateUploadIntentStatus(
                ctx,
                intentID,
                model.LinkStatusPending,
                model.LinkStatusProcessing,
        )
        if err != nil {
                errClose := artifactReader.Close()
                if errClose != nil {
                        l.Warnf("failed to close artifact reader: %s", errClose)
                }
                if errors.Is(err, store.ErrNotFound) {
                        return ErrUploadNotFound
                }
                return err
        }
        go d.processUploadedArtifact( // nolint:errcheck
                ctxAsync, intentID, artifactReader, skipVerify,
        )
        return nil
}

func getArtifactInfo(info artifact.Info) *model.ArtifactInfo {
        return &model.ArtifactInfo{
                Format:  info.Format,
                Version: uint(info.Version),
        }
}

func getUpdateFiles(uFiles []*handlers.DataFile) ([]model.UpdateFile, error) {
        var files []model.UpdateFile
        for _, u := range uFiles {
                files = append(files, model.UpdateFile{
                        Name:     u.Name,
                        Size:     u.Size,
                        Date:     &u.Date,
                        Checksum: string(u.Checksum),
                })
        }
        return files, nil
}

func getMetaFromArchive(r *io.Reader, skipVerify bool) (*model.ArtifactMeta, error) {
        metaArtifact := model.NewArtifactMeta()

        aReader := areader.NewReader(*r)

        // There is no signature verification here.
        // It is just simple check if artifact is signed or not.
        aReader.VerifySignatureCallback = func(message, sig []byte) error {
                metaArtifact.Signed = true
                return nil
        }

        var err error
        if skipVerify {
                err = aReader.ReadArtifactHeaders()
                if err != nil {
                        return nil, errors.Wrap(err, "reading artifact error")
                }
        } else {
                err = aReader.ReadArtifact()
                if err != nil {
                        return nil, errors.Wrap(err, "reading artifact error")
                }
        }

        metaArtifact.Info = getArtifactInfo(aReader.GetInfo())
        metaArtifact.DeviceTypesCompatible = aReader.GetCompatibleDevices()

        metaArtifact.Name = aReader.GetArtifactName()
        if metaArtifact.Info.Version == 3 {
                metaArtifact.Depends, err = aReader.MergeArtifactDepends()
                if err != nil {
                        return nil, errors.Wrap(err,
                                "error parsing version 3 artifact")
                }

                metaArtifact.Provides, err = aReader.MergeArtifactProvides()
                if err != nil {
                        return nil, errors.Wrap(err,
                                "error parsing version 3 artifact")
                }

                metaArtifact.ClearsProvides = aReader.MergeArtifactClearsProvides()
        }

        for _, p := range aReader.GetHandlers() {
                uFiles, err := getUpdateFiles(p.GetUpdateFiles())
                if err != nil {
                        return nil, errors.Wrap(err, "Cannot get update files:")
                }

                uMetadata, err := p.GetUpdateMetaData()
                if err != nil {
                        return nil, errors.Wrap(err, "Cannot get update metadata")
                }

                metaArtifact.Updates = append(
                        metaArtifact.Updates,
                        model.Update{
                                TypeInfo: model.ArtifactUpdateTypeInfo{
                                        Type: p.GetUpdateType(),
                                },
                                Files:    uFiles,
                                MetaData: uMetadata,
                        })
        }

        return metaArtifact, nil
}

func getArtifactIDs(artifacts []*model.Image) []string {
        artifactIDs := make([]string, 0, len(artifacts))
        for _, artifact := range artifacts {
                artifactIDs = append(artifactIDs, artifact.Id)
        }
        return artifactIDs
}

// deployments
func inventoryDevicesToDevicesIds(devices []model.InvDevice) []string {
        ids := make([]string, len(devices))
        for i, d := range devices {
                ids[i] = d.ID
        }

        return ids
}

// updateDeploymentConstructor fills devices list with device ids
func (d *Deployments) updateDeploymentConstructor(ctx context.Context,
        constructor *model.DeploymentConstructor) (*model.DeploymentConstructor, error) {
        l := log.FromContext(ctx)

        id := identity.FromContext(ctx)
        if id == nil {
                l.Error("identity not present in the context")
                return nil, ErrModelInternal
        }
        searchParams := model.SearchParams{
                Page:    1,
                PerPage: PerPageInventoryDevices,
                Filters: []model.FilterPredicate{
                        {
                                Scope:     InventoryIdentityScope,
                                Attribute: InventoryStatusAttributeName,
                                Type:      "$eq",
                                Value:     InventoryStatusAccepted,
                        },
                },
        }
        if len(constructor.Group) > 0 {
                searchParams.Filters = append(
                        searchParams.Filters,
                        model.FilterPredicate{
                                Scope:     InventoryGroupScope,
                                Attribute: InventoryGroupAttributeName,
                                Type:      "$eq",
                                Value:     constructor.Group,
                        })
        }

        for {
                devices, count, err := d.search(ctx, id.Tenant, searchParams)
                if err != nil {
                        l.Errorf("error searching for devices")
                        return nil, ErrModelInternal
                }
                if count < 1 {
                        l.Errorf("no devices found")
                        return nil, ErrNoDevices
                }
                if len(devices) < 1 {
                        break
                }
                constructor.Devices = append(constructor.Devices, inventoryDevicesToDevicesIds(devices)...)
                if len(constructor.Devices) == count {
                        break
                }
                searchParams.Page++
        }

        return constructor, nil
}

// CreateDeviceConfigurationDeployment creates new configuration deployment for the device.
func (d *Deployments) CreateDeviceConfigurationDeployment(
        ctx context.Context, constructor *model.ConfigurationDeploymentConstructor,
        deviceID, deploymentID string) (string, error) {

        if constructor == nil {
                return "", ErrModelMissingInput
        }

        deployment, err := model.NewDeploymentFromConfigurationDeploymentConstructor(
                constructor,
                deploymentID,
        )
        if err != nil {
                return "", errors.Wrap(err, "failed to create deployment")
        }

        deployment.DeviceList = []string{deviceID}
        deployment.MaxDevices = 1
        deployment.Configuration = []byte(constructor.Configuration)
        deployment.Type = model.DeploymentTypeConfiguration

        groups, err := d.getDeploymentGroups(ctx, []string{deviceID})
        if err != nil {
                return "", err
        }
        deployment.Groups = groups

        if err := d.db.InsertDeployment(ctx, deployment); err != nil {
                if strings.Contains(err.Error(), "duplicate key error") {
                        return "", ErrDuplicateDeployment
                }
                if strings.Contains(err.Error(), "id: must be a valid UUID") {
                        return "", ErrInvalidDeploymentID
                }
                return "", errors.Wrap(err, "Storing deployment data")
        }

        return deployment.Id, nil
}

// CreateDeployment precomputes new deployment and schedules it for devices.
func (d *Deployments) CreateDeployment(ctx context.Context,
        constructor *model.DeploymentConstructor) (string, error) {

        var err error

        if constructor == nil {
                return "", ErrModelMissingInput
        }

        if err := constructor.Validate(); err != nil {
                return "", errors.Wrap(err, "Validating deployment")
        }

        if len(constructor.Group) > 0 || constructor.AllDevices {
                constructor, err = d.updateDeploymentConstructor(ctx, constructor)
                if err != nil {
                        return "", err
                }
        }

        deployment, err := model.NewDeploymentFromConstructor(constructor)
        if err != nil {
                return "", errors.Wrap(err, "failed to create deployment")
        }

        // Assign artifacts to the deployment.
        // When new artifact(s) with the artifact name same as the one in the deployment
        // will be uploaded to the backend, it will also become part of this deployment.
        artifacts, err := d.db.ImagesByName(ctx, deployment.ArtifactName)
        if err != nil {
                return "", errors.Wrap(err, "Finding artifact with given name")
        }

        if len(artifacts) == 0 {
                return "", ErrNoArtifact
        }

        deployment.Artifacts = getArtifactIDs(artifacts)
        deployment.DeviceList = constructor.Devices
        deployment.MaxDevices = len(constructor.Devices)
        deployment.Type = model.DeploymentTypeSoftware
        if len(constructor.Group) > 0 {
                deployment.Groups = []string{constructor.Group}
        }

        // single device deployment case
        if len(deployment.Groups) == 0 && len(constructor.Devices) == 1 {
                groups, err := d.getDeploymentGroups(ctx, constructor.Devices)
                if err != nil {
                        return "", err
                }
                deployment.Groups = groups
        }

        if err := d.db.InsertDeployment(ctx, deployment); err != nil {
                return "", errors.Wrap(err, "Storing deployment data")
        }

        return deployment.Id, nil
}

func (d *Deployments) getDeploymentGroups(
        ctx context.Context,
        devices []string,
) ([]string, error) {
        id := identity.FromContext(ctx)

        //only for single device deployment case
        if len(devices) != 1 {
                return nil, nil
        }

        if id == nil {
                id = &identity.Identity{}
        }

        groups, err := d.inventoryClient.GetDeviceGroups(ctx, id.Tenant, devices[0])
        if err != nil && err != inventory.ErrDevNotFound {
                return nil, err
        }
        return groups, nil
}

// IsDeploymentFinished checks if there is unfinished deployment with given ID
func (d *Deployments) IsDeploymentFinished(
        ctx context.Context,
        deploymentID string,
) (bool, error) {
        deployment, err := d.db.FindUnfinishedByID(ctx, deploymentID)
        if err != nil {
                return false, errors.Wrap(err, "Searching for unfinished deployment by ID")
        }
        if deployment == nil {
                return true, nil
        }

        return false, nil
}

// GetDeployment fetches deployment by ID
func (d *Deployments) GetDeployment(ctx context.Context,
        deploymentID string) (*model.Deployment, error) {

        deployment, err := d.db.FindDeploymentByID(ctx, deploymentID)
        if err != nil {
                return nil, errors.Wrap(err, "Searching for deployment by ID")
        }

        if err := d.setDeploymentDeviceCountIfUnset(ctx, deployment); err != nil {
                return nil, err
        }

        return deployment, nil
}

// ImageUsedInActiveDeployment checks if specified image is in use by deployments Image is
// considered to be in use if it's participating in at lest one non success/error deployment.
func (d *Deployments) ImageUsedInActiveDeployment(ctx context.Context,
        imageID string) (bool, error) {

        var found bool

        found, err := d.db.ExistUnfinishedByArtifactId(ctx, imageID)
        if err != nil {
                return false, errors.Wrap(err, "Checking if image is used by active deployment")
        }

        if found {
                return found, nil
        }

        found, err = d.db.ExistAssignedImageWithIDAndStatuses(ctx,
                imageID, model.ActiveDeploymentStatuses()...)
        if err != nil {
                return false, errors.Wrap(err, "Checking if image is used by active deployment")
        }

        return found, nil
}

// ImageUsedInDeployment checks if specified image is in use by deployments
// Image is considered to be in use if it's participating in any deployment.
func (d *Deployments) ImageUsedInDeployment(ctx context.Context, imageID string) (bool, error) {

        var found bool

        found, err := d.db.ExistUnfinishedByArtifactId(ctx, imageID)
        if err != nil {
                return false, errors.Wrap(err, "Checking if image is used by active deployment")
        }

        if found {
                return found, nil
        }

        found, err = d.db.ExistAssignedImageWithIDAndStatuses(ctx, imageID)
        if err != nil {
                return false, errors.Wrap(err, "Checking if image is used in deployment")
        }

        return found, nil
}

// Retrieves the model.Deployment and model.DeviceDeployment structures
// for the device. Upon error, nil is returned for both deployment structures.
func (d *Deployments) getDeploymentForDevice(ctx context.Context,
        deviceID string) (*model.Deployment, *model.DeviceDeployment, error) {

        // Retrieve device deployment
        deviceDeployment, err := d.db.FindOldestActiveDeviceDeployment(ctx, deviceID)

        if err != nil {
                return nil, nil, errors.Wrap(err,
                        "Searching for oldest active deployment for the device")
        } else if deviceDeployment == nil {
                return d.getNewDeploymentForDevice(ctx, deviceID)
        }

        deployment, err := d.db.FindDeploymentByID(ctx, deviceDeployment.DeploymentId)
        if err != nil {
                return nil, nil, errors.Wrap(err, "checking deployment id")
        }
        if deployment == nil {
                return nil, nil, errors.New("No deployment corresponding to device deployment")
        }

        return deployment, deviceDeployment, nil
}

// getNewDeploymentForDevice returns deployment object and creates and returns
// new device deployment for the device;
//
// we are interested only in the deployments that are newer than the latest
// deployment applied by the device;
// this way we guarantee that the device will not receive deployment
// that is older than the one installed on the device;
func (d *Deployments) getNewDeploymentForDevice(ctx context.Context,
        deviceID string) (*model.Deployment, *model.DeviceDeployment, error) {

        var lastDeployment *time.Time
        //get latest device deployment for the device;
        deviceDeployment, err := d.db.FindLatestInactiveDeviceDeployment(ctx, deviceID)
        if err != nil {
                return nil, nil, errors.Wrap(err,
                        "Searching for latest active deployment for the device")
        } else if deviceDeployment == nil {
                lastDeployment = &time.Time{}
        } else {
                lastDeployment = deviceDeployment.Created
        }

        //get deployments newer then last device deployment
        //iterate over deployments and check if the device is part of the deployment or not
        for skip := 0; true; skip += 100 {
                deployments, err := d.db.FindNewerActiveDeployments(ctx, lastDeployment, skip, 100)
                if err != nil {
                        return nil, nil, errors.Wrap(err,
                                "Failed to search for newer active deployments")
                }
                if len(deployments) == 0 {
                        return nil, nil, nil
                }

                for _, deployment := range deployments {
                        ok, err := d.isDevicePartOfDeployment(ctx, deviceID, deployment)
                        if err != nil {
                                return nil, nil, err
                        }
                        if ok {
                                deviceDeployment, err := d.createDeviceDeploymentWithStatus(ctx,
                                        deviceID, deployment, model.DeviceDeploymentStatusPending)
                                if err != nil {
                                        return nil, nil, err
                                }
                                return deployment, deviceDeployment, nil
                        }
                }
        }

        return nil, nil, nil
}

func (d *Deployments) createDeviceDeploymentWithStatus(
        ctx context.Context, deviceID string,
        deployment *model.Deployment, status model.DeviceDeploymentStatus,
) (*model.DeviceDeployment, error) {
        prevStatus := model.DeviceDeploymentStatusNull
        deviceDeployment, err := d.db.GetDeviceDeployment(ctx, deployment.Id, deviceID, true)
        if err != nil && err != mongo.ErrStorageNotFound {
                return nil, err
        } else if deviceDeployment != nil {
                prevStatus = deviceDeployment.Status
        }

        deviceDeployment = model.NewDeviceDeployment(deviceID, deployment.Id)
        deviceDeployment.Status = status
        deviceDeployment.Active = status.Active()
        deviceDeployment.Created = deployment.Created

        if err := d.setDeploymentDeviceCountIfUnset(ctx, deployment); err != nil {
                return nil, err
        }

        if err := d.db.InsertDeviceDeployment(ctx, deviceDeployment,
                prevStatus == model.DeviceDeploymentStatusNull); err != nil {
                return nil, err
        }

        // after inserting new device deployment update deployment stats
        // in the database and locally, and update deployment status
        if err := d.db.UpdateStatsInc(
                ctx, deployment.Id,
                prevStatus, status,
        ); err != nil {
                return nil, err
        }

        deployment.Stats.Inc(status)

        err = d.recalcDeploymentStatus(ctx, deployment)
        if err != nil {
                return nil, errors.Wrap(err, "failed to update deployment status")
        }

        if !status.Active() {
                err := d.reindexDevice(ctx, deviceID)
                if err != nil {
                        l := log.FromContext(ctx)
                        l.Warn(errors.Wrap(err, "failed to trigger a device reindex"))
                }
                if err := d.reindexDeployment(ctx, deviceDeployment.DeviceId,
                        deviceDeployment.DeploymentId, deviceDeployment.Id); err != nil {
                        l := log.FromContext(ctx)
                        l.Warn(errors.Wrap(err, "failed to trigger a device reindex"))
                }
        }

        return deviceDeployment, nil
}

func (d *Deployments) isDevicePartOfDeployment(
        ctx context.Context,
        deviceID string,
        deployment *model.Deployment,
) (bool, error) {
        for _, id := range deployment.DeviceList {
                if id == deviceID {
                        return true, nil
                }
        }
        return false, nil
}

// GetDeploymentForDeviceWithCurrent returns deployment for the device
func (d *Deployments) GetDeploymentForDeviceWithCurrent(ctx context.Context, deviceID string,
        request *model.DeploymentNextRequest) (*model.DeploymentInstructions, error) {

        deployment, deviceDeployment, err := d.getDeploymentForDevice(ctx, deviceID)
        if err != nil {
                return nil, ErrModelInternal
        } else if deployment == nil {
                return nil, nil
        }

        err = d.saveDeviceDeploymentRequest(ctx, deviceID, deviceDeployment, request)
        if err != nil {
                return nil, err
        }
        return d.getDeploymentInstructions(ctx, deployment, deviceDeployment, request)
}

func (d *Deployments) getDeploymentInstructions(
        ctx context.Context,
        deployment *model.Deployment,
        deviceDeployment *model.DeviceDeployment,
        request *model.DeploymentNextRequest,
) (*model.DeploymentInstructions, error) {

        var newArtifactAssigned bool

        l := log.FromContext(ctx)

        if deployment.Type == model.DeploymentTypeConfiguration {
                // There's nothing more we need to do, the link must be filled
                // in by the API layer.
                return &model.DeploymentInstructions{
                        ID: deployment.Id,
                        Artifact: model.ArtifactDeploymentInstructions{
                                // configuration artifacts are created on demand, so they do not have IDs
                                // use deployment ID togheter with device ID as artifact ID
                                ID:                    deployment.Id + deviceDeployment.DeviceId,
                                ArtifactName:          deployment.ArtifactName,
                                DeviceTypesCompatible: []string{request.DeviceProvides.DeviceType},
                        },
                        Type: model.DeploymentTypeConfiguration,
                }, nil
        }

        // assing artifact to the device deployment
        // only if it was not assgined previously
        if deviceDeployment.Image == nil {
                if err := d.assignArtifact(
                        ctx, deployment, deviceDeployment, request.DeviceProvides); err != nil {
                        return nil, err
                }
                newArtifactAssigned = true
        }

        if deviceDeployment.Image == nil {
                // No artifact - return empty response
                return nil, nil
        }

        // if the deployment is not forcing the installation, and
        // if artifact was recognized as already installed, and this is
        // a new device deployment - indicated by device deployment status "pending",
        // handle already installed artifact case
        if !deployment.ForceInstallation &&
                d.isAlreadyInstalled(request, deviceDeployment) &&
                deviceDeployment.Status == model.DeviceDeploymentStatusPending {
                return nil, d.handleAlreadyInstalled(ctx, deviceDeployment)
        }

        // if new artifact has been assigned to device deployment
        // add artifact size to deployment total size,
        // before returning deployment instruction to the device
        if newArtifactAssigned {
                if err := d.db.IncrementDeploymentTotalSize(
                        ctx, deviceDeployment.DeploymentId, deviceDeployment.Image.Size); err != nil {
                        l.Errorf("failed to increment deployment total size: %s", err.Error())
                }
        }

        ctx, err := d.contextWithStorageSettings(ctx)
        if err != nil {
                return nil, err
        }

        imagePath := model.ImagePathFromContext(ctx, deviceDeployment.Image.Id)
        link, err := d.objectStorage.GetRequest(
                ctx,
                imagePath,
                deviceDeployment.Image.Name+model.ArtifactFileSuffix,
                DefaultUpdateDownloadLinkExpire,
        )
        if err != nil {
                return nil, errors.Wrap(err, "Generating download link for the device")
        }

        instructions := &model.DeploymentInstructions{
                ID: deviceDeployment.DeploymentId,
                Artifact: model.ArtifactDeploymentInstructions{
                        ID: deviceDeployment.Image.Id,
                        ArtifactName: deviceDeployment.Image.
                                ArtifactMeta.Name,
                        Source: *link,
                        DeviceTypesCompatible: deviceDeployment.Image.
                                ArtifactMeta.DeviceTypesCompatible,
                },
        }

        return instructions, nil
}

func (d *Deployments) saveDeviceDeploymentRequest(ctx context.Context, deviceID string,
        deviceDeployment *model.DeviceDeployment, request *model.DeploymentNextRequest) error {
        if deviceDeployment.Request != nil {
                if !reflect.DeepEqual(deviceDeployment.Request, request) {
                        // the device reported different device type and/or artifact name
                        // during the update process, which should never happen;
                        // mark deployment for this device as failed to force client to rollback
                        l := log.FromContext(ctx)
                        l.Errorf(
                                "Device with id %s reported new data: %s during update process;"+
                                        "old data: %s",
                                deviceID, request, deviceDeployment.Request)

                        if err := d.UpdateDeviceDeploymentStatus(ctx, deviceDeployment.DeploymentId, deviceID,
                                model.DeviceDeploymentState{
                                        Status: model.DeviceDeploymentStatusFailure,
                                }); err != nil {
                                return errors.Wrap(err, "Failed to update deployment status")
                        }
                        if err := d.reindexDevice(ctx, deviceDeployment.DeviceId); err != nil {
                                l.Warn(errors.Wrap(err, "failed to trigger a device reindex"))
                        }
                        if err := d.reindexDeployment(ctx, deviceDeployment.DeviceId,
                                deviceDeployment.DeploymentId, deviceDeployment.Id); err != nil {
                                l := log.FromContext(ctx)
                                l.Warn(errors.Wrap(err, "failed to trigger a device reindex"))
                        }
                        return ErrConflictingRequestData
                }
        } else {
                // save the request
                if err := d.db.SaveDeviceDeploymentRequest(
                        ctx, deviceDeployment.Id, request); err != nil {
                        return err
                }
        }
        return nil
}

// UpdateDeviceDeploymentStatus will update the deployment status for device of
// ID `deviceID`. Returns nil if update was successful.
func (d *Deployments) UpdateDeviceDeploymentStatus(ctx context.Context, deploymentID string,
        deviceID string, ddState model.DeviceDeploymentState) error {

        l := log.FromContext(ctx)

        l.Infof("New status: %s for device %s deployment: %v", ddState.Status, deviceID, deploymentID)

        var finishTime *time.Time = nil
        if model.IsDeviceDeploymentStatusFinished(ddState.Status) {
                now := time.Now()
                finishTime = &now
        }

        dd, err := d.db.GetDeviceDeployment(ctx, deploymentID, deviceID, false)
        if err == mongo.ErrStorageNotFound {
                return ErrStorageNotFound
        } else if err != nil {
                return err
        }

        currentStatus := dd.Status

        if currentStatus == model.DeviceDeploymentStatusAborted {
                return ErrDeploymentAborted
        }

        if currentStatus == model.DeviceDeploymentStatusDecommissioned {
                return ErrDeviceDecommissioned
        }

        // nothing to do
        if ddState.Status == currentStatus {
                return nil
        }

        // update finish time
        ddState.FinishTime = finishTime

        old, err := d.db.UpdateDeviceDeploymentStatus(ctx,
                deviceID, deploymentID, ddState)
        if err != nil {
                return err
        }

        if err = d.db.UpdateStatsInc(ctx, deploymentID, old, ddState.Status); err != nil {
                return err
        }

        // fetch deployment stats and update deployment status
        deployment, err := d.db.FindDeploymentByID(ctx, deploymentID)
        if err != nil {
                return errors.Wrap(err, "failed when searching for deployment")
        }

        err = d.recalcDeploymentStatus(ctx, deployment)
        if err != nil {
                return errors.Wrap(err, "failed to update deployment status")
        }

        if !ddState.Status.Active() {
                l := log.FromContext(ctx)
                ldd := model.DeviceDeployment{
                        DeviceId:     dd.DeviceId,
                        DeploymentId: dd.DeploymentId,
                        Id:           dd.Id,
                        Status:       ddState.Status,
                }
                if err := d.db.SaveLastDeviceDeploymentStatus(ctx, ldd); err != nil {
                        l.Error(errors.Wrap(err, "failed to save last device deployment status").Error())
                }
                if err := d.reindexDevice(ctx, deviceID); err != nil {
                        l.Warn(errors.Wrap(err, "failed to trigger a device reindex"))
                }
                if err := d.reindexDeployment(ctx, dd.DeviceId, dd.DeploymentId, dd.Id); err != nil {
                        l.Warn(errors.Wrap(err, "failed to trigger a device reindex"))
                }
        }

        return nil
}

// recalcDeploymentStatus inspects the deployment stats and
// recalculates and updates its status
// it should be used whenever deployment stats are touched
func (d *Deployments) recalcDeploymentStatus(ctx context.Context, dep *model.Deployment) error {
        status := dep.GetStatus()

        if err := d.db.SetDeploymentStatus(ctx, dep.Id, status, time.Now()); err != nil {
                return err
        }

        return nil
}

func (d *Deployments) GetDeploymentStats(ctx context.Context,
        deploymentID string) (model.Stats, error) {

        deployment, err := d.db.FindDeploymentByID(ctx, deploymentID)

        if err != nil {
                return nil, errors.Wrap(err, "checking deployment id")
        }

        if deployment == nil {
                return nil, nil
        }

        return deployment.Stats, nil
}
func (d *Deployments) GetDeploymentsStats(ctx context.Context,
        deploymentIDs ...string) (deploymentStats []*model.DeploymentStats, err error) {

        deploymentStats, err = d.db.FindDeploymentStatsByIDs(ctx, deploymentIDs...)

        if err != nil {
                return nil, errors.Wrap(err, "checking deployment statistics for IDs")
        }

        if deploymentStats == nil {
                return nil, ErrModelDeploymentNotFound
        }

        return deploymentStats, nil
}

// GetDeviceStatusesForDeployment retrieve device deployment statuses for a given deployment.
func (d *Deployments) GetDeviceStatusesForDeployment(ctx context.Context,
        deploymentID string) ([]model.DeviceDeployment, error) {

        deployment, err := d.db.FindDeploymentByID(ctx, deploymentID)
        if err != nil {
                return nil, ErrModelInternal
        }

        if deployment == nil {
                return nil, ErrModelDeploymentNotFound
        }

        statuses, err := d.db.GetDeviceStatusesForDeployment(ctx, deploymentID)
        if err != nil {
                return nil, ErrModelInternal
        }

        return statuses, nil
}

func (d *Deployments) GetDevicesListForDeployment(ctx context.Context,
        query store.ListQuery) ([]model.DeviceDeployment, int, error) {

        deployment, err := d.db.FindDeploymentByID(ctx, query.DeploymentID)
        if err != nil {
                return nil, -1, ErrModelInternal
        }

        if deployment == nil {
                return nil, -1, ErrModelDeploymentNotFound
        }

        statuses, totalCount, err := d.db.GetDevicesListForDeployment(ctx, query)
        if err != nil {
                return nil, -1, ErrModelInternal
        }

        return statuses, totalCount, nil
}

func (d *Deployments) GetDeviceDeploymentListForDevice(ctx context.Context,
        query store.ListQueryDeviceDeployments) ([]model.DeviceDeploymentListItem, int, error) {
        deviceDeployments, totalCount, err := d.db.GetDeviceDeploymentsForDevice(ctx, query)
        if err != nil {
                return nil, -1, errors.Wrap(err, "retrieving the list of deployment statuses")
        }

        deploymentIDs := make([]string, len(deviceDeployments))
        for i, deviceDeployment := range deviceDeployments {
                deploymentIDs[i] = deviceDeployment.DeploymentId
        }

        deployments, _, err := d.db.Find(ctx, model.Query{
                IDs:          deploymentIDs,
                Limit:        len(deviceDeployments),
                DisableCount: true,
        })
        if err != nil {
                return nil, -1, errors.Wrap(err, "retrieving the list of deployments")
        }

        deploymentsMap := make(map[string]*model.Deployment, len(deployments))
        for _, deployment := range deployments {
                deploymentsMap[deployment.Id] = deployment
        }

        res := make([]model.DeviceDeploymentListItem, 0, len(deviceDeployments))
        for i, deviceDeployment := range deviceDeployments {
                if deployment, ok := deploymentsMap[deviceDeployment.DeploymentId]; ok {
                        res = append(res, model.DeviceDeploymentListItem{
                                Id:         deviceDeployment.Id,
                                Deployment: deployment,
                                Device:     &deviceDeployments[i],
                        })
                } else {
                        res = append(res, model.DeviceDeploymentListItem{
                                Id:     deviceDeployment.Id,
                                Device: &deviceDeployments[i],
                        })
                }
        }

        return res, totalCount, nil
}

func (d *Deployments) setDeploymentDeviceCountIfUnset(
        ctx context.Context,
        deployment *model.Deployment,
) error {
        if deployment.DeviceCount == nil {
                deviceCount, err := d.db.DeviceCountByDeployment(ctx, deployment.Id)
                if err != nil {
                        return errors.Wrap(err, "counting device deployments")
                }
                err = d.db.SetDeploymentDeviceCount(ctx, deployment.Id, deviceCount)
                if err != nil {
                        return errors.Wrap(err, "setting the device count for the deployment")
                }
                deployment.DeviceCount = &deviceCount
        }

        return nil
}

func (d *Deployments) LookupDeployment(ctx context.Context,
        query model.Query) ([]*model.Deployment, int64, error) {
        list, totalCount, err := d.db.Find(ctx, query)

        if err != nil {
                return nil, 0, errors.Wrap(err, "searching for deployments")
        }

        if list == nil {
                return make([]*model.Deployment, 0), 0, nil
        }

        for _, deployment := range list {
                if err := d.setDeploymentDeviceCountIfUnset(ctx, deployment); err != nil {
                        return nil, 0, err
                }
        }

        return list, totalCount, nil
}

// SaveDeviceDeploymentLog will save the deployment log for device of
// ID `deviceID`. Returns nil if log was saved successfully.
func (d *Deployments) SaveDeviceDeploymentLog(ctx context.Context, deviceID string,
        deploymentID string, logs []model.LogMessage) error {

        // repack to temporary deployment log and validate
        dlog := model.DeploymentLog{
                DeviceID:     deviceID,
                DeploymentID: deploymentID,
                Messages:     logs,
        }
        if err := dlog.Validate(); err != nil {
                return errors.Wrapf(err, ErrStorageInvalidLog.Error())
        }

        if has, err := d.HasDeploymentForDevice(ctx, deploymentID, deviceID); !has {
                if err != nil {
                        return err
                } else {
                        return ErrModelDeploymentNotFound
                }
        }

        if err := d.db.SaveDeviceDeploymentLog(ctx, dlog); err != nil {
                return err
        }

        return d.db.UpdateDeviceDeploymentLogAvailability(ctx,
                deviceID, deploymentID, true)
}

func (d *Deployments) GetDeviceDeploymentLog(ctx context.Context,
        deviceID, deploymentID string) (*model.DeploymentLog, error) {

        return d.db.GetDeviceDeploymentLog(ctx,
                deviceID, deploymentID)
}

func (d *Deployments) HasDeploymentForDevice(ctx context.Context,
        deploymentID string, deviceID string) (bool, error) {
        return d.db.HasDeploymentForDevice(ctx, deploymentID, deviceID)
}

// AbortDeployment aborts deployment for devices and updates deployment stats
func (d *Deployments) AbortDeployment(ctx context.Context, deploymentID string) error {

        if err := d.db.AbortDeviceDeployments(ctx, deploymentID); err != nil {
                return err
        }

        stats, err := d.db.AggregateDeviceDeploymentByStatus(
                ctx, deploymentID)
        if err != nil {
                return err
        }

        // update statistics
        if err := d.db.UpdateStats(ctx, deploymentID, stats); err != nil {
                return errors.Wrap(err, "failed to update deployment stats")
        }

        // when aborting the deployment we need to set status directly instead of
        // using recalcDeploymentStatus method;
        // it is possible that the deployment does not have any device deployments yet;
        // in that case, all statistics are 0 and calculating status based on statistics
        // will not work - the calculated status will be "pending"
        if err := d.db.SetDeploymentStatus(ctx,
                deploymentID, model.DeploymentStatusFinished, time.Now()); err != nil {
                return errors.Wrap(err, "failed to update deployment status")
        }

        return nil
}

func (d *Deployments) updateDeviceDeploymentsStatus(
        ctx context.Context,
        deviceId string,
        status model.DeviceDeploymentStatus,
) error {
        var latestDeployment *time.Time
        // Retrieve active device deployment for the device
        deviceDeployment, err := d.db.FindOldestActiveDeviceDeployment(ctx, deviceId)
        if err != nil {
                return errors.Wrap(err, "Searching for active deployment for the device")
        } else if deviceDeployment != nil {
                now := time.Now()
                ddStatus := model.DeviceDeploymentState{
                        Status:     status,
                        FinishTime: &now,
                }
                if err := d.UpdateDeviceDeploymentStatus(ctx, deviceDeployment.DeploymentId,
                        deviceId, ddStatus); err != nil {
                        return errors.Wrap(err, "updating device deployment status")
                }
                latestDeployment = deviceDeployment.Created
        } else {
                // get latest device deployment for the device
                deviceDeployment, err := d.db.FindLatestInactiveDeviceDeployment(ctx, deviceId)
                if err != nil {
                        return errors.Wrap(err, "Searching for latest active deployment for the device")
                } else if deviceDeployment == nil {
                        latestDeployment = &time.Time{}
                } else {
                        latestDeployment = deviceDeployment.Created
                }
        }

        // get deployments newer then last device deployment
        // iterate over deployments and check if the device is part of the deployment or not
        // if the device is part of the deployment create new, decommisioned device deployment
        for skip := 0; true; skip += 100 {
                deployments, err := d.db.FindNewerActiveDeployments(ctx, latestDeployment, skip, 100)
                if err != nil {
                        return errors.Wrap(err, "Failed to search for newer active deployments")
                }
                if len(deployments) == 0 {
                        break
                }
                for _, deployment := range deployments {
                        ok, err := d.isDevicePartOfDeployment(ctx, deviceId, deployment)
                        if err != nil {
                                return err
                        }
                        if ok {
                                deviceDeployment, err := d.createDeviceDeploymentWithStatus(ctx,
                                        deviceId, deployment, status)
                                if err != nil {
                                        return err
                                }
                                if !status.Active() {
                                        if err := d.reindexDeployment(ctx, deviceDeployment.DeviceId,
                                                deviceDeployment.DeploymentId, deviceDeployment.Id); err != nil {
                                                l := log.FromContext(ctx)
                                                l.Warn(errors.Wrap(err, "failed to trigger a device reindex"))
                                        }
                                }
                        }
                }
        }

        if err := d.reindexDevice(ctx, deviceId); err != nil {
                l := log.FromContext(ctx)
                l.Warn(errors.Wrap(err, "failed to trigger a device reindex"))
        }

        return nil
}

// DecommissionDevice updates the status of all the pending and active deployments for a device
// to decommissioned
func (d *Deployments) DecommissionDevice(ctx context.Context, deviceId string) error {
        return d.updateDeviceDeploymentsStatus(
                ctx,
                deviceId,
                model.DeviceDeploymentStatusDecommissioned,
        )
}

// AbortDeviceDeployments aborts all the pending and active deployments for a device
func (d *Deployments) AbortDeviceDeployments(ctx context.Context, deviceId string) error {
        return d.updateDeviceDeploymentsStatus(
                ctx,
                deviceId,
                model.DeviceDeploymentStatusAborted,
        )
}

// DeleteDeviceDeploymentsHistory deletes the device deployments history
func (d *Deployments) DeleteDeviceDeploymentsHistory(ctx context.Context, deviceId string) error {
        // get device deployments which will be marked as deleted
        f := false
        dd, err := d.db.GetDeviceDeployments(ctx, 0, 0, deviceId, &f, false)
        if err != nil {
                return err
        }

        // no device deployments to update
        if len(dd) <= 0 {
                return nil
        }

        // mark device deployments as deleted
        if err := d.db.DeleteDeviceDeploymentsHistory(ctx, deviceId); err != nil {
                return err
        }

        // trigger reindexing of updated device deployments
        deviceDeployments := make([]workflows.DeviceDeploymentShortInfo, len(dd))
        for i, d := range dd {
                deviceDeployments[i].ID = d.Id
                deviceDeployments[i].DeviceID = d.DeviceId
                deviceDeployments[i].DeploymentID = d.DeploymentId
        }
        if d.reportingClient != nil {
                err = d.workflowsClient.StartReindexReportingDeploymentBatch(ctx, deviceDeployments)
        }
        return err
}

// Storage settings
func (d *Deployments) GetStorageSettings(ctx context.Context) (*model.StorageSettings, error) {
        settings, err := d.db.GetStorageSettings(ctx)
        if err != nil {
                return nil, errors.Wrap(err, "Searching for settings failed")
        }

        return settings, nil
}

func (d *Deployments) SetStorageSettings(
        ctx context.Context,
        storageSettings *model.StorageSettings,
) error {
        if storageSettings != nil {
                ctx = storage.SettingsWithContext(ctx, storageSettings)
                if err := d.objectStorage.HealthCheck(ctx); err != nil {
                        return errors.WithMessage(err,
                                "the provided storage settings failed the health check",
                        )
                }
        }
        if err := d.db.SetStorageSettings(ctx, storageSettings); err != nil {
                return errors.Wrap(err, "Failed to save settings")
        }

        return nil
}

func (d *Deployments) WithReporting(c reporting.Client) *Deployments {
        d.reportingClient = c
        return d
}

func (d *Deployments) haveReporting() bool {
        return d.reportingClient != nil
}

func (d *Deployments) search(
        ctx context.Context,
        tid string,
        parms model.SearchParams,
) ([]model.InvDevice, int, error) {
        if d.haveReporting() {
                return d.reportingClient.Search(ctx, tid, parms)
        } else {
                return d.inventoryClient.Search(ctx, tid, parms)
        }
}

func (d *Deployments) UpdateDeploymentsWithArtifactName(
        ctx context.Context,
        artifactName string,
) error {
        // first check if there are pending deployments with given artifact name
        exists, err := d.db.ExistUnfinishedByArtifactName(ctx, artifactName)
        if err != nil {
                return errors.Wrap(err, "looking for deployments with given artifact name")
        }
        if !exists {
                return nil
        }

        // Assign artifacts to the deployments with given artifact name
        artifacts, err := d.db.ImagesByName(ctx, artifactName)
        if err != nil {
                return errors.Wrap(err, "Finding artifact with given name")
        }

        if len(artifacts) == 0 {
                return ErrNoArtifact
        }
        artifactIDs := getArtifactIDs(artifacts)
        return d.db.UpdateDeploymentsWithArtifactName(ctx, artifactName, artifactIDs)
}

func (d *Deployments) reindexDevice(ctx context.Context, deviceID string) error {
        if d.reportingClient != nil {
                return d.workflowsClient.StartReindexReporting(ctx, deviceID)
        }
        return nil
}

func (d *Deployments) reindexDeployment(ctx context.Context,
        deviceID, deploymentID, ID string) error {
        if d.reportingClient != nil {
                return d.workflowsClient.StartReindexReportingDeployment(ctx, deviceID, deploymentID, ID)
        }
        return nil
}

mendersoftware / deployments / 972758132

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